/*
 * SonarQube
 * Copyright (C) 2009-2021 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.ce.task.projectanalysis.scm;

import org.junit.Test;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

public class ChangesetTest {

  @Test
  public void create_changeset() {
    Changeset underTest = Changeset.newChangesetBuilder()
      .setAuthor("john")
      .setDate(123456789L)
      .setRevision("rev-1")
      .build();

    assertThat(underTest.getAuthor()).isEqualTo("john");
    assertThat(underTest.getDate()).isEqualTo(123456789L);
    assertThat(underTest.getRevision()).isEqualTo("rev-1");
  }

  @Test
  public void create_changeset_with_minimum_fields() {
    Changeset underTest = Changeset.newChangesetBuilder()
      .setDate(123456789L)
      .build();

    assertThat(underTest.getAuthor()).isNull();
    assertThat(underTest.getDate()).isEqualTo(123456789L);
    assertThat(underTest.getRevision()).isNull();
  }

  @Test
  public void fail_with_NPE_when_setting_null_date() {
    assertThatThrownBy(() -> Changeset.newChangesetBuilder().setDate(null))
      .isInstanceOf(NullPointerException.class)
      .hasMessage("Date cannot be null");
  }

  @Test
  public void fail_with_NPE_when_building_without_date() {
    assertThatThrownBy(() -> {
      Changeset.newChangesetBuilder()
        .setAuthor("john")
        .setRevision("rev-1")
        .build();
    })
      .isInstanceOf(NullPointerException.class)
      .hasMessage("Date cannot be null");
  }

  @Test
  public void test_to_string() {
    Changeset underTest = Changeset.newChangesetBuilder()
      .setAuthor("john")
      .setDate(123456789L)
      .setRevision("rev-1")
      .build();

    assertThat(underTest).hasToString("Changeset{revision='rev-1', author='john', date=123456789}");
  }

  @Test
  public void equals_and_hashcode_are_based_on_all_fields() {
    Changeset.Builder changesetBuilder = Changeset.newChangesetBuilder()
      .setAuthor("john")
      .setDate(123456789L)
      .setRevision("rev-1");

    Changeset changeset = changesetBuilder.build();
    Changeset sameChangeset = changesetBuilder.build();

    Changeset anotherChangesetWithSameRevision = Changeset.newChangesetBuilder()
      .setAuthor("henry")
      .setDate(1234567810L)
      .setRevision("rev-1")
      .build();

    Changeset anotherChangeset = Changeset.newChangesetBuilder()
      .setAuthor("henry")
      .setDate(996L)
      .setRevision("rev-2")
      .build();

    assertThat(changeset)
      .isEqualTo(changeset)
      .isEqualTo(sameChangeset)
      .isNotEqualTo(anotherChangesetWithSameRevision)
      .isNotEqualTo(anotherChangeset)
      .hasSameHashCodeAs(changeset)
      .hasSameHashCodeAs(sameChangeset);
    assertThat(changeset.hashCode())
      .isNotEqualTo(anotherChangesetWithSameRevision.hashCode())
      .isNotEqualTo(anotherChangeset.hashCode());
  }
}